制浆造纸废水高级氧化技术研究现状及展望

Pulping and Papermaking Wastewater Advanced Oxidation Technology Research Status and Prospects

高级氧化技术又称深度氧化技术,是在高温高压、电、声、光辐照、催化剂等反应条件下,使大分子难降解有机物氧化成低毒或无毒的小分子物质。高级氧化技术具有高效、彻底、适用范围广、无二次污染等优点,几乎可以无选择地氧化废水中任何有机污染物,保证排放废水达到新标准的硬性指标。目前高级氧化技术主要包括化学催化氧化法、光催化氧化法、电化学氧化法、声化学氧化、湿式空气氧化法、超临界水氧化法等。本文就不同高级氧化技术的原理、技术特点及存在的问题进行了解析。

the advanced oxidation technique is also called the depth of oxidation technology,is in high temperature and high pressure,electricity,sound and light irradiation,catalysts,reaction conditions such as the macromolecular refractory organics oxidation into the low-toxic and non-toxic small molecules.Advanced oxidation technology with high efficiency,complete,wide applicable scope,no secondary pollution etc,and can almost without any organic pollutants in the selective oxidation of wastewater,ensure the hard Num原bers of wastewater to meet the new standards.At present the advanced oxidation technologies mainly include chemical catalytic oxida原tion,photocatalytic oxidation,electrochemical oxidation,sonochemical oxidation,wet air oxidation,supercritical water oxidation method,etc.In this paper,the principle of different advanced oxidation technologies,technical characteristics and existing problems of the parsing.